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NO974048L - Triggers for height adjustment for chair backs - Google Patents

Triggers for height adjustment for chair backs Download PDF

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Publication number
NO974048L
NO974048L NO974048A NO974048A NO974048L NO 974048 L NO974048 L NO 974048L NO 974048 A NO974048 A NO 974048A NO 974048 A NO974048 A NO 974048A NO 974048 L NO974048 L NO 974048L
Authority
NO
Norway
Prior art keywords
spring
housing
base plate
key
height adjustment
Prior art date
Application number
NO974048A
Other languages
Norwegian (no)
Other versions
NO974048D0 (en
Inventor
Reinhard Gebhard
Original Assignee
Sifa Sitzfabrik Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sifa Sitzfabrik Gmbh filed Critical Sifa Sitzfabrik Gmbh
Publication of NO974048D0 publication Critical patent/NO974048D0/en
Publication of NO974048L publication Critical patent/NO974048L/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back
    • A47C7/402Support for the head or the back for the back adjustable in height

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Description

Oppfinnelsen vedrører en utløser for en høyderegulering for stolrygger, med de trekk som er angitt i innledningen til patentkrav 1. The invention relates to a trigger for a height adjustment for chair backs, with the features stated in the introduction to patent claim 1.

En slik høyderegulering for stolrygger, særlig kontorstoler, hvor høydereguleringen består av et hus hvori en flat ryggbærer holdes med en kulesperreklemming, idet ryggbæreren har i aksial retning etter hverandre anordnede fordypninger eller gjennombrudd for sperrekuler, som holdes i fordypningene eller gjennombruddene ved hjelp av en fjærbelastet klemskråflate, som kan bringes ut av inngrep mot fjærkraften ved hjelp av en sideveis ut av huset ført taster, er eksempelvis kjent fra EP-A-0 264 555. Such a height adjustment for chair backs, in particular office chairs, where the height adjustment consists of a housing in which a flat back carrier is held with a ball locking clamp, the back carrier having successively arranged recesses or openings in the axial direction for locking balls, which are held in the recesses or openings by means of a spring-loaded clamping bevel surface, which can be brought out of engagement against the spring force by means of keys led laterally out of the housing, is known for example from EP-A-0 264 555.

Hensikten med foreliggende oppfinnelse er å tilveiebringe en utløser for en høyderegulering av den innledningsvis nevnte type, ved hvilken utløser en og samme mekanisme på enkel måte kan forsynes med ulike tastere og også uten en slik taster danner en kompakt enhet, hvorfra ingen deler kan gå tapt. The purpose of the present invention is to provide a trigger for a height adjustment of the type mentioned at the outset, by which trigger one and the same mechanism can be provided in a simple way with different keys and also without such keys forms a compact unit, from which no parts can be lost .

Dette oppnås med de trekk som er angitt i karakteristikken i patentkrav 1. Videreutviklinger og fordelaktige utførelsesformer av oppfinnelsen er angitt i de uselvstendige krav. This is achieved with the features stated in the characteristic in patent claim 1. Further developments and advantageous embodiments of the invention are stated in the independent claims.

Ifølge oppfinnelsen er det i huset festet en grunnplate. Denne grunnplate har et spor som omtrent ligger i tasterens akse og har et smalere avsnitt for den enden av tasteren hvormed den går inn i huset og grunnplaten. Sporet har etter det smalere avsnitt et bredere avsnitt, hvor en klemdel, som oppviser kJemskråflaten for kulen og er bredere enn sporets smalere avsnitt, her forskyvbart ført under påvirkning av tasteren, mot kraften til en fjær som avstøtter seg mot den ende av sporet som er motliggende tasteren. Trinnet i overgangen mellom det smalere og det bredere sporavsnitt tjener som anslag for klemdelen. According to the invention, a base plate is attached to the house. This base plate has a groove that lies approximately in the axis of the key and has a narrower section for the end of the key where it enters the housing and base plate. After the narrower section, the slot has a wider section, where a clamping part, which presents the beveled surface for the ball and is wider than the slot's narrower section, is here displaceably guided under the influence of the key, against the force of a spring which pushes against the end of the slot which is opposite key. The step in the transition between the narrower and the wider track section serves as a stop for the clamping part.

Fordelaktig har tasteren inne i huset et utsparing hvori en fjær, en sperrenese eller ligende på grunnplaten går inn. I en foretrukken utførelsesform av oppfinnelsen er fjæren, sperrenesen eller lignende uløsbar innrastet med hensyn til trekkpåvirkninger på tasteren. Advantageously, the key has a recess inside the housing into which a spring, a locking nose or a hinge on the base plate goes. In a preferred embodiment of the invention, the spring, locking nose or the like is irremovably latched with respect to tensile influences on the key.

Oppfinnelsen skal forklares nærmere under henvisning til tegningene, hvor:The invention shall be explained in more detail with reference to the drawings, where:

Fig 1-3 viser en høyderegulering i tre riss, idet fig. 1 viser et oppriss, med den øvre husdel utelatt, Figs 1-3 show a height adjustment in three views, as fig. 1 shows an elevation, with the upper housing part omitted,

fig. 2 viser et snitt etter linjen A-A, ogfig. 2 shows a section along the line A-A, and

fig. 3 viser et snitt etter linjen B-B i fig. 1.fig. 3 shows a section along the line B-B in fig. 1.

Fig. 4a-6c viser detaljer fra fig. 1.Fig. 4a-6c show details from fig. 1.

Høydereguleringen i fig. 1 -6c består av et flatt hus med et i hovedsaken rettvinklet tverrsnitt og hvori en flat ryggbærer 2 er glidbart og fastklembart ført. Huset kan være forlenget nedover og være forbundet med en setebærer. Det kan også ha andre dimensjoner enn som vist og kan være krummet. The height adjustment in fig. 1 - 6c consists of a flat housing with a mainly right-angled cross-section and in which a flat back carrier 2 is slidably and clampably guided. The housing can be extended downwards and be connected to a seat carrier. It may also have different dimensions than shown and may be curved.

Ryggbæreren 2 har langs sin midtakse en rad boringer 3, som definerer den respektive innstikningsdybde. I en av disse boringene 3 sitter den en sperrekule 4, som presses inn i boringen av en klemskråflate 5' på en klemdel 5. Presstrykket tilveiebringes av en fjær 6, som avstøtter seg mot en grunnplate 7, som er festet i huset 1, eksempelvis ved hjelp av skruer 17. Grunnplaten 7 har også et spor 16 hvor klemdelen 5 kan gli og hvor det forefinnes et anslag på den relativt fjæren 6 motliggende side. På denne siden ligger en taster an mot klemdelen 5. Ved hjelp av denne taster kan klemdelen trykkes mot kraften til fjæren 6 slik at klemskråflaten 5' frigir kulen 4 og ryggen derved kan forskyves, helt til den ønskede innstikningsdybde er nådd og tasteren 8 er sluppet. Tasteren 8 har en flat utsparing 8', hvor det under monteringen går inn en liten fjær 9, slik at tasteren 8 ikke lenger kan trekkes ut. Dette tiltak hindrer en utilsiktet løsgjøring av tasteren 8 og byr på den muligheten at man uten problemer kan sette inn ulike typer tastere i en og samme høyderegulering. Da grunnplaten 7 fortrinnsvis er av plast, er det i det område hvor kulen 4 trykker mot klemskråflaten 5' anordnet en metallskive 21, for å sikre en lang funksjonstid. The back carrier 2 has along its central axis a row of bores 3, which define the respective insertion depth. In one of these bores 3 sits a locking ball 4, which is pressed into the bore by a clamping bevel surface 5' on a clamping part 5. The pressing pressure is provided by a spring 6, which rests against a base plate 7, which is fixed in the housing 1, for example by means of screws 17. The base plate 7 also has a groove 16 where the clamping part 5 can slide and where there is a stop on the side opposite the spring 6. On this side, a key rests against the clamping part 5. With the help of this key, the clamping part can be pressed against the force of the spring 6 so that the clamping inclined surface 5' releases the ball 4 and the back can thereby be displaced, until the desired insertion depth is reached and the key 8 is released . The button 8 has a flat recess 8', into which a small spring 9 goes during assembly, so that the button 8 can no longer be pulled out. This measure prevents an accidental release of the button 8 and offers the possibility that different types of buttons can be inserted into one and the same height adjustment without problems. As the base plate 7 is preferably made of plastic, a metal disc 21 is arranged in the area where the ball 4 presses against the clamping bevel surface 5', to ensure a long service life.

Grunnplaten 7 strekker seg i fra tastersiden og over en større del av husets 1 grunnflate og har en løpeflate og en anslagskant for ryggbæreren 2. På den annen side ligger ryggbæreren 2 an mot et trinn 11' på den rette siden til en kile 11, hvilken kile med sin skråflate 11" ligger an mot en skråflate 10" på en andre kile 10, som på sin side med sin rette side ligger an mot en innervegg i huset. Den andre kile 10 er ved sin brede ende påvirket av en trykkfjær 12, som avstøtter seg mot et fremspring 13 på grunnplaten. Fjæren 12 trykker kilen 10 oppover i fig. 1, slik at det via skråflatene 10" og 11" overføres en sideveis rettet kraft mot ryggbæreren 2, som på denne måten far en klaringsfri føring. Grunnplaten 7 har spor 15 som er åpne mot den første kile 11 og gliudbart opptar styretapper 14 (fig. 4c og 4e). Dette gir styring for kilen 11 slik at den ikke kan vike unna. The base plate 7 extends from the key side and over a larger part of the base surface of the housing 1 and has a running surface and a stop edge for the back carrier 2. On the other side, the back carrier 2 rests against a step 11' on the right side of a wedge 11, which wedge with its inclined surface 11" rests against an inclined surface 10" on a second wedge 10, which in turn rests with its straight side against an inner wall in the house. The second wedge 10 is affected at its wide end by a compression spring 12, which rests against a projection 13 on the base plate. The spring 12 presses the wedge 10 upwards in fig. 1, so that via the inclined surfaces 10" and 11" a laterally directed force is transmitted towards the back carrier 2, which in this way obtains a clearance-free guide. The base plate 7 has grooves 15 which are open to the first wedge 11 and slideably accommodate guide pins 14 (fig. 4c and 4e). This provides guidance for the wedge 11 so that it cannot move away.

Høydereguleringen er forsynt med en uttrekkssikring, vist forskjøvet i fig. 1 og 3. Denne uttrekkssikring innbefatter en boring 22 som i virkeligheten ligger ved siden av den siste boring 3 for sperrekulen, eller i fig. 1 under denne. Over denne boring 22 er det i en utsparing 18 i grunnplaten 7 anordnet en svingbar sperrearm 19. Denne påvirkes slik av en i grunnplaten 7 avstøttet fjær 20 at dens sperrenese 19', som vist i fig. 3, trykkes inn i boringen 22 så snart ryggen er trukket tilsvarende langt ut eller opp. Ryggen blir da blokkert. En innskyvning hindres ikke av sperrearmen 19, da den har en påløpsskråning i denne retning. The height adjustment is provided with a pull-out safety device, shown offset in fig. 1 and 3. This pull-out protection includes a bore 22 which is actually next to the last bore 3 for the locking ball, or in fig. 1 below this. Above this bore 22, a pivotable locking arm 19 is arranged in a recess 18 in the base plate 7. This is affected by a spring 20 supported in the base plate 7 in such a way that its locking nose 19', as shown in fig. 3, is pressed into the bore 22 as soon as the back has been pulled correspondingly far out or up. The back is then blocked. An insertion is not prevented by the locking arm 19, as it has an approach slope in this direction.

Claims (3)

1. Utløser for en høyderegulering for stolrygger, består av et hus (1) hvori en flat ryggbærer (2) holdes med en kulesperreklemming, idet ryggbæreren (2) har i aksial retning etter hverandre anordnede fordypninger eller gjennombrudd (3) for sperrekuler (4), som holdes i fordypningene eller gjennombruddene (3) ved hjelp av en fjærbelastet klemskråflate (5'), som kan bringes ut av inngrep mot fjærkraften ved hjelp av en sideveis ut av huset (1) ført taster (8), karakterisert ved aten grunnplate (7) er festet i huset (1), at denne grunnplate (7) har et spor (16) anordnet omtrent i tasterens (8) akse, at dettes por (16) har et smalere avsnitt for den ende av tasteren (8) som går inn i huset (1) og grunnplaten (7), og at sporet (16) har et bredere avsnitt hvori en klemdel (5), som oppviser klemskråflaten (5') for kulen (4) og er bredere enn det smalere avsnitt, er forskyvbart ført under påvirkning av tasteren (8), mot kraften til en fjær (6) som avstøtter seg mot en ende av sporet (16) som er motliggende tasteren (8).1. Trigger for a height adjustment for chair backs, consists of a housing (1) in which a flat back carrier (2) is held with a ball locking clamp, the back carrier (2) having successively arranged recesses or openings (3) for locking balls (4) in the axial direction, which is held in the depressions or breakthroughs (3) by means of a spring-loaded clamping inclined surface (5'), which can be brought out of engagement against the spring force by means of a laterally out of the housing (1) led keys (8), characterized by aten base plate ( 7) is fixed in the housing (1), that this base plate (7) has a groove (16) arranged approximately in the axis of the key (8), that its hole (16) has a narrower section for the end of the key (8) which goes into the housing (1) and the base plate (7), and that the groove (16) has a wider section in which a clamping part (5), which presents the clamping inclined surface (5') for the ball (4) and is wider than the narrower section, is displaceably guided under the influence of the key (8), against the force of a spring (6) which rests against an end of the track (16) which is opposite key (8). 2. Utløser ifølge krav 1, karakterisert ved at tasteren (8) inne i huset (1) har en utsparing (8'), og at en fjær (9), en sperrenese eller lignende på grunnplaten (7) er ført inn i denne utsparing (8 <1> ).2. Trigger according to claim 1, characterized in that the button (8) inside the housing (1) has a recess (8'), and that a spring (9), a locking nose or the like on the base plate (7) is led into this recess ( 8 <1> ). 3. Utløser ifølge krav 2, karakterisert ved at fjæren (9), sperrenesen eller lignende er uløsbart innført med hensyn på trekkpåvirkning på tasteren (8).3. Trigger according to claim 2, characterized in that the spring (9), locking nose or the like is inextricably inserted with regard to pulling action on the button (8).
NO974048A 1996-01-10 1997-09-03 Triggers for height adjustment for chair backs NO974048L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29600333U DE29600333U1 (en) 1996-01-10 1996-01-10 Release for height adjustment of backrests
PCT/DE1997/000002 WO1997024959A1 (en) 1996-01-10 1997-01-04 Release for a seat-back height adjuster

Publications (2)

Publication Number Publication Date
NO974048D0 NO974048D0 (en) 1997-09-03
NO974048L true NO974048L (en) 1997-09-03

Family

ID=8017851

Family Applications (1)

Application Number Title Priority Date Filing Date
NO974048A NO974048L (en) 1996-01-10 1997-09-03 Triggers for height adjustment for chair backs

Country Status (5)

Country Link
US (1) US5884969A (en)
EP (1) EP0820245B1 (en)
DE (2) DE29600333U1 (en)
NO (1) NO974048L (en)
WO (1) WO1997024959A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6250715B1 (en) * 1998-01-21 2001-06-26 Herman Miller, Inc. Chair
US6219694B1 (en) * 1998-05-29 2001-04-17 Research In Motion Limited System and method for pushing information from a host system to a mobile data communication device having a shared electronic address
US6032908A (en) * 1998-08-12 2000-03-07 Marketing Displays International Sign stand with cam release assembly
US7559517B2 (en) * 2006-08-09 2009-07-14 Kye Systems Corp. Clamping mechanism for computer peripheral device
US8500195B2 (en) * 2011-02-16 2013-08-06 II Norman Curlalion Smith Adjustable supporting bracket for motorcycle backrest
US9096151B2 (en) 2011-05-27 2015-08-04 Husqvarna Ab Lawn care vehicle adjustable seat
US9770111B2 (en) 2015-03-05 2017-09-26 A-Dec, Inc. Height adjusting mechanism and stool for dental practitioner
EP3387956B1 (en) * 2017-04-12 2019-05-22 L&P Property Management Company Chair including screw-shaft based lever actuator mechanism
US11154454B2 (en) 2017-10-23 2021-10-26 Physio-Control, Inc. CPR chest compression device with releasable base member

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1075323A (en) * 1912-05-24 1913-10-14 Israel Benjamins Adjustable stand.
US1101552A (en) * 1913-07-03 1914-06-30 Walter E Hume Support for dress-forms and the like.
US3295888A (en) * 1965-10-21 1967-01-03 Steelcase Inc Backrest height adjusting apparatus for chairs and the like
DE1753671B1 (en) * 1965-11-12 1971-08-26 Boehler Nachf Wilhelm Boehler ARMCHAIR WITH ADJUSTABLE SEAT AND OR BACKREST
DE3635244A1 (en) * 1986-10-16 1988-04-28 Dauphin F W Buerositzmoebel CHAIR, ESPECIALLY OFFICE CHAIR, WITH HEIGHT-ADJUSTABLE BACKREST
DE8905077U1 (en) * 1989-04-21 1989-06-15 Wiesner-Hager KG, Altheim Chair with height-adjustable backrest

Also Published As

Publication number Publication date
NO974048D0 (en) 1997-09-03
DE29600333U1 (en) 1996-03-07
WO1997024959A1 (en) 1997-07-17
EP0820245A1 (en) 1998-01-28
US5884969A (en) 1999-03-23
DE59707016D1 (en) 2002-05-23
EP0820245B1 (en) 2002-04-17

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